>>91723769Iggy (the guy in the bunny pajamas) didn't come to school and Arnold was told to bring his school work to him, Arnold catches Iggy in said pajamas and Iggy makes him swear no to tell anyone.
Arnold is later talking with Stinky and Sid and they, by some magical chance, guess that Iggy was in the bunny pj's, they tell the whole school and Iggy blames Arnold (even thought he didn't say a dam thing).
Arnold tries to get Iggy to like him again by doing all of his chores for what seems like a year, Arnold asks again and Iggy give him the bunny pjs and Arnold has to walk from his house to the other side of the street and back, while everyone (including news reporters) watches and laughs. Iggy overhears Stinky and Sid about how they were the ones who did it and now Iggy is begging for Arnold's forgiveness.
Longer than most but I wanted to give the full story.